Short answer: the Tronsmart Mirtune C3. It ranks #102 of 182 medium speakers by sound quality, rated 3.1/5, at $29.99; the Marshall Emberton III ranks #128, rated 2.7/5, and costs $179.99, so there is little reason to consider the other one.
The Tronsmart Mirtune C3 is the better-sounding, lighter pick. A small, light waterproof speaker at a budget price, with Auracast multi speaker sync, stereo pairing, USB-C audio input and app EQ. At 1.2 lbs (530 g) it weighs noticeably less than the Marshall Emberton III at 1.5 lbs (673 g). Watch for: In GiT’s three way blind test it came behind the Creative Muvo Go and Xiaomi Sound Outdoor, sounding good only on sparse tracks, and listeners in AudioPro Reviews’ comparison found the JBL Flip 6 fuller with more bass.
The Marshall Emberton III is the longer-running option. A tough waterproof speaker with Marshall styling and a very long battery, plus quick charging. It is rated for 32 hours of battery against 12 for the Tronsmart Mirtune C3. It plays in stereo from a single unit, unlike the Tronsmart Mirtune C3. Watch for: Strange unnatural echo-like sound coloration, bass not as deep as competitors.
Buy the Tronsmart Mirtune C3. It is rated higher for sound quality than the Marshall Emberton III and costs less, which makes it the one to get unless you need something the other one does better.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Prices on this page were last checked November 14, 2026 at 6:17 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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Specifications Side By Side
| Tronsmart Mirtune C3 | Marshall Emberton III | |
|---|---|---|
| Price | $29.99 | $179.99 |
| Ranked | #102 of 182 in Medium Size Portable Bluetooth Speakers | #128 of 182 in Medium Size Portable Bluetooth Speakers |
| Aux Input | No | No |
| Amplifier Power | 30W | 20W |
| App | Yes (Tronsmart) | Yes |
| Battery Capacity | 14.8Wh (7.4V, 2000mAh) | - |
| Battery Life | 12 hours at 50% volume (Manufacturer specified) | 32 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| Bluetooth Version | 6.0 | 5.3 |
| Charging Time | 2 hours | - |
| Digital Aux Input | Yes (USB-C) | No |
| Dimensions | 7.1”H x 2.8”W x 2.8”D (180 x 70 x 72 mm) | 6.3” x 2.7” x 3” (160 x 68 x 76 mm) |
| Drivers | 1x racetrack woofer + 1x tweeter | 2x 2” full-range cone drivers + 2x 2” passive radiators |
| EQ | Yes (app) | Yes (3 presets via app) |
| Frequency Response | 55Hz - 20kHz (Manufacturer specified) | - |
| IP Rating | IPX7 | IP67 |
| Omnidirectional | No | Yes |
| Party Mode | Yes (Auracast) | Yes (Marshall Stack) |
| Power Input | USB-C | USB-C |
| Stereo | No | Yes |
| Strap | Yes (lanyard) | No |
| TWS | Yes | No |
| Weight | 1.2 lbs (0.53 kg) | 1.5 lbs (673 g) |
| Bass Extension (-10dB) | - | 62Hz |
| Built-in Microphone | - | Yes |
| Power Bank | - | No |
Where the Ratings Come From
- Tronsmart Mirtune C3: reviews by THBOX, GiT and AudioPro.
- Marshall Emberton III: reviews by Danny Pops, CEONTHEMAKING and Passione Speaker.
This comparison is generated from the ratings, specifications and measurements on each product’s own page, and it updates when that data changes. How we rank explains how each rating is decided.
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